<html>
<head>
    <title>demo</title>
    <script type="text/javascript" src="file:///e:/Users/hetao/work/codegoogle/wcf-rest-client/demo/bin/Debug/js/jquery.js"></script>
    <script type="text/javascript">
        jQuery(function ($) {
            alert($("head").length);
        })
    </script>
</head>
<body>
</body>
</html>